Well girls have an "atrophied" version of a prostate. Just above the vagina, about 2 inches in. It is known as the g-spot. If you rub that shit hard and fast, the girls will feel a different type of orgasm; different from a clitorial one. It will be deeper and more intense. Many girls feel like having to pee during this type of orgasm, so they hold it. Is natural. However, you gotta let it go!!! is not pee, is water coming from that spot squeezed out!
Besides that, it has to be a matter of training to achieve the impressive amount of water I experienced. Cumming 6-7 times like that is something that belongs to a circus. Even If it was pee, the bladder could NOT hold that much water. But like I said, I proved is not pee. Is water. Is beautiful. Gods should be proud of the creation.